The River Shannon enters the Atlantic Ocean after Limerick city at the Shannon Estuary.
Other major rivers include the River Liffey, River Lee, River Blackwater, River Nore, River Suir, River Barrow, River Bann, River Foyle, River Erne, and River Boyne. (See the list of rivers in Ireland.)
Lough Neagh, in Ulster, is the largest lake in Ireland and the UK. Legend has it that a giant, Fionn mac Cumhail, was fighting with another in Scotland, and enraged, scooped out a lump of earth, which he threw.
It fell into the Irish Sea, creating the Isle of Man, while the hole filled up with water to become Lough Neagh. Other large lakes include Lough Erne and Lough Corrib.